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Up‐conversion luminescence of ytterbium and thulium codoped potassium yttrium double tungstate crystal
Author(s) -
Cheng Z. X.,
Yi X. J.,
Han J. R.,
Chen H. C.,
Wang X. L.,
Liu H. K.,
Dou S. X.,
Song F.,
Guo H. C.
Publication year - 2002
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200290008
Subject(s) - thulium , ytterbium , tungstate , yttrium , materials science , luminescence , ion , doping , absorption spectroscopy , crystal (programming language) , analytical chemistry (journal) , chemistry , optics , optoelectronics , physics , organic chemistry , chromatography , computer science , metallurgy , programming language , oxide
Thulium and ytterbium co‐doped double tungstate Yb 3+ ,Tm 3+ : NaY(WO 4 ) 2 single crystals were prepared by using RF‐heating Czochralski (CZ) pulling method. Its polarized transmittance spectra have been recorded in the region of 290‐2000 nm at room temperature. The energy levels transitions were assigned to the corresponding absorption line. The up‐conversion luminescences at 793 nm and 475 nm were measured when the sample were pumped by 972 nm LD and the energy transfer mechanism between Yb 3+ and Tm 3+ ions was analyzed.